Clark's orbit

Here's something I found out today from the discovery channel... Arthur C Clark invented the idea of satellites:

"The idea for developing communications satellites was born soon after the war, when the future famous American sci fi writer Arthur Clark, in an issue of the Radio World magazine for October 1945, unveiled his concept of a repeater communication station located at an altitude of 35,880 kilometres above the Earth.

Clark is credited with determining the height of the orbit at which the satellite is immobile relative to Earth. Such an orbit is called stationary /geostationary/ or Clark's orbit. "

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